| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
6.5%
|
| 2 | Every few weeks | 13 |
16.9%
|
| 3 | Every few months | 34 |
44.2%
|
| 4 | Not at all | 25 |
32.5%
|
| Sysmiss | 32 |